I am currently organising a rail jam for an event at my uni. It consists of a scaffolding ramp and a couple of down rails (street entry) and the ramp dimensions are below. Does anyone have any info on how big/what angles the lips should be? How steep the rail should be etc.? This event has been run for the past 10 years so we've got some idea of what we're doing but i want to make it perfect and safe for the riders. Any tips would be much appreciated, cheers